Here’s a fun build from [RootSaid] that is suitable for people just getting started with microcontrollers and robotics — an Arduino-controlled two-wheeled robot. The video assumes you already have one ...

I've completely swapped my home over to LED lights, and for the most part, I love it. The energy savings are real, and I'm a sucker for all the smart color changing tes. But my biggest grievance is ...

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More than one-fifth of US electricity is used to power artificial lighting. Light-emitting diodes based on group III/nitride semiconductors are bringing about a revolution in energy-efficient lighting ...

On paper, LED bulbs are made to last for at least several years thanks to their low energy needs. I wanted to know why that doesn't always work out, so I talked to installers and LED manufacturers to ...

Dermatologists explain the science behind wildly popular treatments like red light therapy, which is now available at home—for a steep price. Full-face LED masks like this one can cost up to several ...

Lasers, LEDs and light sources are devices that create light. LEDs (light emitting diodes) convert an electrical current into light using spontaneous emission in optically active semiconductors.

Every item on this page was chosen by an ELLE editor. We may earn commission on some of the items you choose to buy. Her signature heavy-blush application, spotted on stars like Cassie, Naomi Campbell ...

Her signature heavy-blush application, spotted on stars like Cassie, Naomi Campbell, SZA, and Kelly Rowland, has taken the internet by storm in recent months—and it’s not hard to see why. The ...

As 2025 draws to a close and we turn our attention to the next wave of beauty: Barbie blush is already emerging as the trend to watch. While Barbiecore might still linger in the zeitgeist after 2023’s ...